Fought two days earlier
Arthur Wellesley, 1st Duke of Wellington → Battle of Quatre Bras: Fought two days earlier. Field Marshal Arthur Wellesley, 1st Duke of Wellington, was a British Army officer and statesman. A leading figure in early-19th-century British politics, Wellesley served as Prime Minister of the United Kingdom and as Commander-in-Chief of the Forces. The Battle of Quatre Bras was fought on 16 June 1815, as a preliminary engagement to the decisive Battle of Waterloo that occurred two days later.